While enabling Open User Interface list applet column headers are aligned differently (Center , right or left) compared to ActiveX client.
Headers are Center aligned however the fields are left aligned. This does not provide good look in user interface.
You can make the column alignment uniform across the application by making below change.
Step 1. Navigate to block ".ui-jqgrid .ui-jqgrid-htable th div"
Step 2. Go to \23030\SCRIPTS\3rdParty\jqGrid\current\css\ui.jqgrid.css file.
Step 3. Add "text-align:left;" to the above file.
Above change will update all list applets header to left.